Kinetics and thermodynamics of carbonation of a promising SOFC cathode material La0.5Ba0.5CoO3-δ(LBC)

被引：8

作者：

Arulmozhi, Nakkiran ^{[1
]}

Kan, Wang Hay ^{[2
]}

Thangadurai, Venkataraman ^{[2
]}

Karan, Kunal ^{[1
,3
]}

机构：

[1] Queens Univ, Dept Chem Engn, Kingston, ON K7L 3N6, Canada

[2] Univ Calgary, Dept Chem, Calgary, AB T2N 1N4, Canada

[3] Univ Calgary, Dept Chem & Petr Engn, Calgary, AB T2N 1N4, Canada

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2013年 / 1卷 / 47期

基金：

加拿大自然科学与工程研究理事会;

关键词：

X-RAY-DIFFRACTION; OXYGEN NONSTOICHIOMETRY; DIOXIDE SORPTION; FUEL-CELLS; TEMPERATURE; OXIDE; CO2; STABILITY; ELECTROLYTES; STRONTIUM;

D O I：

10.1039/c3ta11711a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This work examines the reactivity of a potentially promising SOFC cathode material, La0.5Ba0.5CoO3-delta (LBC), under CO2 atmosphere. Through a combination of different techniques - thermogravimetric analysis, ex situ XRD analyses of reacted products, and in situ XRD analysis - the reaction pathway and kinetics for LBC carbonation is investigated. The thermodynamic phase boundary for carbonate formation in the LBC-CO2 system has been generated and fundamental thermodynamic parameters - the standard state enthalpy (Delta H degrees) and the standard state entropy (Delta S degrees) - are determined.

引用

页码：15117 / 15127

页数：11

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